Eaton easySafety Manual page 224

Standard function blocks
220
Coils
The coils of the function block are used in the standard
circuit diagram.
Parameters Function
Count coil, starts counting with rising edges
C ..C_
Reset of the counter relay to zero
C ..RE
Count direction setting
C ..D_
Transfer of the start value on a rising edge.
C ..SE
Contacts
The contacts of the function block are evaluated in the
standard circuit diagram. A closed contact indicates:
Parameters Function
Reaching or exceeding the upper limit setpoint
C ..OF
Reaching or falling below the lower limit
C ..FB
setpoint
Actual value equals zero
C ..ZE
Value range exceeded
C ..CY
Memory requirement
The counter relay function block requires 52 bytes of memory
plus 4 bytes per constant at the function block inputs.
Retention
Counter relays can be operated with retentive actual values.
The number of retentive counter relays can be selected in the
SYSTEM r RETENTION menu. The retentive actual value
requires 4 bytes of memory.
If a counter relay is retentive, the actual value is retained
when the operating mode changes from RUN to STOP as
well as when the power supply is switched off. When is
started in RUN mode, the counter relay continues with the
retentively stored actual value. If easySafety is started in
RUN mode, the timing relay operates with the retentively
saved actual value.
02/16 MN05013001Z EN